The first of its kind, Skunk2’s Hard Anodized Billet VTEC Solenoid is designed to be used with Honda's F20C1 and F22C1 cylinder heads and is compatible with Honda’s original pressure sensor, solenoid internals, and gasket. Billet VTEC Solenoids for Honda's F-series engines are available exclusively in Skunk2's Hard Anodized finish.